Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Income (Loss) Before Income Taxes

For financial reporting purposes, income before income taxes includes the following components:

	Years Ended December 31,
(in millions)	2024		2023		2022
United States	$	25.9	$	36.4	$	8.5
Foreign	(12.0)		6.4		(4.1)
Income before income taxes	$	13.9	$	42.8	$	4.4

Schedule of Provision for Income Tax

The provision for income taxes consists of the following:

	Years Ended December 31,
(in millions)	2024		2023		2022
Current provision:
Federal	$	13.3	$	8.2	$	17.4
State	0.9		4.5		2.4
Foreign	2.6		2.8		2.3
Total current provision	16.8		15.5		22.1
Deferred benefit:
Federal	(8.2)		(3.6)		(18.3)
State	0.8		(2.8)		(1.0)
Foreign	0.4		—		2.2
Total deferred benefit	(7.0)		(6.4)		(17.1)
Total provision:
Federal	5.1		4.6		(0.9)
State	1.7		1.7		1.4
Foreign	3.0		2.8		4.5
Total income tax provision	$	9.8	$	9.1	$	5.0

Schedule of Reconciliation of Provision for Income Taxes at Statutory Federal Income Tax Rate

A reconciliation of the provision for income taxes at the statutory federal income tax rate to the amount provided is as follows:

	Years Ended December 31,
(in millions)	2024		2023		2022
Tax expense at the statutory federal income tax rate	$	2.9	$	8.9	$	0.9
State income tax, net of federal income tax	3.9		0.4		0.6
Research and development tax credits	(2.8)		(2.8)		(3.3)
Impact of uncertain tax positions	(0.5)		1.0		1.2
Valuation allowance impact	1.7		0.3		6.0
Changes in tax rates	0.7		0.8		0.2
Share-based compensation	0.1		0.6		0.4
Foreign-derived intangible income deduction	(0.4)		(0.7)		(0.9)
Foreign tax credit	(0.4)		(0.5)		(0.2)
Goodwill impairment	2.9		—		—
Other items	1.7		1.1		0.1
Total income tax provision	$	9.8	$	9.1	$	5.0

Schedule of Significant Components of Company's Deferred Tax Assets and Liabilities

Significant components of the Company's deferred tax assets and liabilities are as follows:

	December 31,
(in millions)	2024		2023
Deferred tax assets:
Amortization of research and experimental expenditures	$	30.7	$	24.7
Inventory reserves	7.6		5.8
Warranty reserves	3.7		3.7
Credit loss reserves	0.5		0.8
State tax loss carryforwards	11.5		11.5
Accrued vacation	1.4		1.2
Deferred compensation	1.0		1.1
Share-based compensation	1.3		2.6
Goodwill	2.8		1.7
Foreign net operating loss	8.3		7.9
Lease obligation	1.6		1.3
Employee & insurance accruals	3.1		1.0
Domestic credit carryforwards	1.5		1.5
Uncertain tax provision reserve	1.1		0.2
Deferred revenue	0.9		2.2
Valuation allowances	(12.4)		(12.5)
Total deferred tax assets	64.6		54.7
Deferred tax liabilities:
Property and equipment	15.8		14.0
Intangibles	0.9		1.8
Right-of-use assets	1.5		1.3
Post-retirement benefits	0.8		0.5
Other	2.2		0.7
Total deferred tax liabilities	21.2		18.3
Total net deferred assets	$	43.4	$	36.4

Schedule of Rollforward of Deferred Tax Assets Valuation Allowance

The following table represents a rollforward of the deferred tax asset valuation allowance for the years ended December 31, 2024, 2023 and 2022:

	Years Ended December 31,
(in millions)	2024		2023		2022
Allowance balance, beginning of year	$	12.5	$	11.9	$	5.9
Provision	1.3		1.8		6.0
Reversals	(1.5)		(1.6)		—
Other	0.1		0.4		—
Allowance balance, end of year	$	12.4	$	12.5	$	11.9

Schedule of Reconciliation of Unrecognized Tax Benefit

A reconciliation of the beginning and ending unrecognized tax benefits excluding interest and penalties is as follows:

	Years Ended December 31,
(in millions)	2024		2023		2022
Balance, beginning of year	$	13.0	$	12.0	$	10.8
Additions for tax positions taken in current year	5.2		0.9		1.2
Additions for tax positions taken in prior period	—		0.1		—
Reductions due to lapse of statutes of limitations	(1.4)		—		—
Balance, end of year	$	16.8	$	13.0	$	12.0